J/AJ/146/97 Ti line list for the Lick hallow-cathode lamp (Pakhomov+, 2013)
Wavelength calibration of the Hamilton echelle spectrograph.
Pakhomov Y.V., Zhao G.
<Astron. J. 146, 97 (2013)>
=2013AJ....146...97P 2013AJ....146...97P
ADC_Keywords: Atomic physics ; Spectroscopy
Keywords: catalogs - instrumentation: spectrographs - line: identification
Abstract:
We present the wavelength calibration of the Hamilton echelle
spectrograph (the Lick observatory). The main problem of the
calibration arises from the fact that thorium lines are absent in the
spectrum of ThAr hollow-cathode lamp now under the operation. On the
other hand, numerous unknown strong lines are present in the spectrum.
These lines was identified with titanium. We estimate the temperature
of the lamp gas which permits us to calculate the intensities of the
lines, and to select a large number of relevant TiI and TiII lines.
The titanium line list for the Lick hallow-cathode lamp is presented.
The wavelength calibration using this line list was made with accuracy
about 0.006Å.
Description:
The catalog presents list of titanium lines and merged full list of
titanium and argon lines needed for wavelength calibration of the
Hamilton echelle spectrograph.
On September 1, 2012, spectra of 18 stars were taken on the Shane 3-m
telescope of the Lick observatory using the Hamilton echelle
spectrograph (with R∼60000). The wavelength standards is performed by
means of the hallow-cathode lamp manufactured by S&J Juniper & Co
(Serial No. 531495). The lamp with the designation LICKHCL-002
presumably has the thorium cathode, quartz envelope, and filled with a
mixture of argon (90%) and neon (10%).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 23 599 List of Ti I and Ti II lines
tiar.dat 15 1095 *Line list of TiAr lamp
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Note on tiar.dat: This list is merge of titanium line list from table2.dat and
argon line list extracted from NOAO ThAr atlas (see Willmarth et al.
http://old-www.noao.edu/kpno/specatlas/thar Thorium-Argon spectral atlas.
Westinghause lamp).
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See also:
J/MNRAS/404/1321 : TiII in Milky way and Magellanic clouds (Welty+, 2010)
J/A+A/468/1115 : Thorium and argon lines in the visible (Lovis+, 2007)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 9 F9.3 0.1nm lambda [3000/11974] Wavelength
12- 17 F6.1 --- Int Relative intensity
20- 23 A4 --- Ion Ion (TiI or TiII)
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Byte-by-byte Description of file: tiar.dat
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Bytes Format Units Label Explanations
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1- 10 F10.4 0.1nm lambda [3000/11974] Wavelength
12- 15 A4 --- Ion Ion (Ar, ArI, ArII, TiI or TiII)
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Acknowledgement:
Yury V. Pakhomov, Russia], pakhomov(at)inasan.ru
(End) Yury Pakhomov [INASAN, Russia], Patricia Vannier [CDS] 19-Jul-2013